Lifting jack



Aug. 5, 1924. ,503,947

N. E. HARRIS ET AL LIFTING JACK Filed march 1o. 1921 s sneenssheez 1 lliliilill Aug. 5 1924.

1,503,947 N. E.' HARRIS ET AL LIFTING- JACK Filed March l0 19421 3 Sheets-Sheet 2 N. E. HARRIS ET AL Aug. 5 1924.

LIFTING JACK Filed March l0 ,y 1921 3 Sheets-Sheet, 3

Patented ug. 5, 1924.

s'ra'rrs PTENT OFFICE.

NORMAN E. IZIARRIS, OF MURRAY, AND WILL D. SVIGGART, F FULTON, KENTUCKY; SAID SWGG-ART ASSIGNOR TO SAID HARRIS.

LIFTING- JACK.

To all who-m t may concern.'

Be it known that we, NORMAN E. HARRrs and Winn D. SwroGART, citizens of the United States, residing at Murray and Fulton, respectively, in the counties of Calloway and Fulton and State of Kentucky, have in A vented certain new and useful Improvements in Lifting Jacks;V and we do hereby declare the following to be a full, clear, and exact description of the` invention, such as will enable others skilled in the art to which it appertains to make and use the same.

rlhis invention relates to improvements in that type of devices termed lifting jacks especially adapted for use in connect-ion with automobiles, while it is equally applicable for jacking up or lifting other wheeled vehicles in makin@ re airs thereto or for other j e. p.

purposes for which 1tmay oe found applicable.

The invention has for its object to provide for applying or disposing the jack or device with greater convenience or'faeility to the vehicle or machine to be operated upon or repaired than has heretofore been practicable.

Avertical movement of and positioning the swiveled j ackhead in contact or engagement with the wheel axle or brake-drum shaft of a motor or automobile or other object to be elevated and sustained.

Other objects of the invention will be apparent from the following description of the construction, arrangement and operation of the parts or features thereof. V

The invention'therefore consists of cer-l tain instrumentalities and features )of construction substantially as hereinafter` more fully disclosed and defined by the appended claims.

Application filed March 10, 1921. Serial No. 451,137.

ment of my invention wherein a mitre and worm-type of gearing are employed for actuating or adjusting the swivel-equipped barrel screw-threaded instrumentality.

Fig. 6 is a transverse section.

Fig. 7 is a fragmental vertical section of a modified form of the swiveled ack-head of the lifting instrumentality.

8 is a side elevation of a wrench which may be used for actuating the worm and vmitre gear actuating means for the lifting instrumentality.

Fig. 9 is a brace-and-bitlike implement for actuating the Vlifting instrumentality.

Fig. l0 is an end elevation of the wormand mitre-gear spinning means for the lift ing instrumentality.

As characteristic features of my invention, I provide as the direct lifting instrumentality an interiorly threaded exterior tubular member or barrel l and an eXteriorly threaded member or screw` 2 arranged within and adapted to actuate said iirst-referred-to member, similar to corresponding members or instrumentalities in my allowed application filed September 10, 1919, Serial No. 322,803 in connection with which I employ certain other features which will now be described: The inner member or screw 2, together with the barrel or tubular member l, is suitably secured upon a foot or base 3, the screw or member 2 having preferably a tenon let into a socketix in said base, with a threaded lower end-extension upon which a nut La is screwed up into and against the bottom of a recess 5 in the underside of said base, a feather or key 4b being'inserted into a slot 4 formed partly in the side of said tenon and partly in the Wall. of .Said recess. The lower end of the terminating tenon of the screw 2 is sunken l connection between the .jackand lthe barrel or member 1 is-effected preferably by means of a thrust-bearing member 7V partlylet into the upper end ofthe tubular member or barrel and suitably supported thereon, it being suitably secured in place by a pin 8 inserted through the thrust bearing member and the barrel or-member 1, said bearing member having seated, in concavities 9 therein, spherical bearing members or balls 10 upon which is mounted said jack-head, the latter having pivotal connection with 1- the thrust-head or member 7 by means of a r pivot 11 shouldered upon said thrust bearing as at 7a and having an upper fianged end as at 7h, the flange being received within and seated upon the shoulder 7c of a counterbore 7d. By means of this form of jackhead 6 and arrangement of bearingspheres or balls 10 the load or weight is lifted in a vertical line inwardly of the resultant circle of the arrangement of said bearing spheres or balls and adapted to be received therein more or less equally all around the thrustbearing and to the full lifting capacity 0f the jack. TheV screw 2 has a flange 8a at its extreme upper end, just beyond the upper initial point of the terminal of its threads, the barrel 1 having a number of spiral threads 1a extending from its lower vend up'- wardly to, and terminating at 1b, the relation betweenthe flange 8a and the upper ter- I: minal point 1b being such that the inter-engagement of the full threads of the barrelmember 1 and the full threads of the screw or member 2 will be such thatl the movement of the barrel-member will be limited upwardly so that such inter-engagement will be discontinued at a point which would intercept projecting the barrel-member beyond the screw as to prevent the mutilation lor injuring 'the teeth of said barrel .and screw at their points of contact, as would be liab-le to otherwise take place.

A ratchet. 12 is suitably housed as at 12a upon the outer surface Vof the threaded barrel-member 1, the 'ratchet being milled out of the housing 12a, the housingbeing .arranged so as to allowv of the turning or vertical adj ustment of the-barrel-member.1findependently thereof, a bottom-annular niemberv 12b, fitting-.freely around vthe` -barrelmieniber, being secured to the housing l2a preferably by means of a screw 12c or otherwise, a suitable handle 13 being pivotally connected to said ratchet-housing 12:l for actuating the ratchet 12, the member 12br serving as a washer for retaining the ratchet operating means in edective relation with the ratchet. f. Y Y Y .The pawl Orplunger 14 for engagement with the ratchet 12, has preferably a plurality of different or varying cross-sections orV diameters, the lpurposes of which will be subsequently described.

The pawl or plunger 14: is housed or encased in a tubular extensionV 15 of .the ratchet-housing 12a, abutting the member 12b, said pawl being arranged within said tubular extension in alinement with, and so as to have engagement with the ratchet 12 as seen in Fig. 1. The pawl or plunger 14 is equipped with a helical or coiled spring 16 encircling the same, so as to cause the pawl or plunger to automatically initially engage theratchet teeth, the forward end of the pawl or plunger being formed with an irregular rear edged tooth 17, the right-lined face of thetoothwhen presented toward the perpendicular yfaceof the ratchet-teeth effecting the holding action, the rear irregular or sloping edge thereof allowing of the slipping or. snapping ofthe pawl or plunger tooth by the ratchet-teeth when the movement of the toothed or l grooved barrelmember 1 is reversed. The differentlydiameterediportions of thev plunger or pawl provide, it will be observed, for suitable .clearance ofthe spring and the delivery of the pressure thereof upon the plunger and shoulders for the retention of the same in proper tensioned position. Also it will be noted that the plungeror pawl 14k has opposite right-lined or rectilinear faced portions ,18 thereon and that the casing or tubular extension 15 has correspondingly.contoured opposite portions 19 thereon to provide for cooperation with 18 to allow of changing the position ofthe plunger as desired in providing for changing the feedof the ratchet for either'opening or closing the jack. The plunger or pawl 14 has fitted upon its outer end a tubular nut or cap 20 preferably by screw-threading the same upon said plunger or pawl 1.4 preferably by means of a pin or.

key21 inserted transversely through orifices or passages l22 producedV through said tubular extension or housing 15 and saidplunger. The Vcap-,nut is stepped at one.` end and adapted tobe -received within, and manipulated Vby applyingthereto a suitable wrench for turning thecap-.nut into fixed position upon .the .plunger or, ,.pawl, the cap-nut, however, beingv adapted. to bear.. and turn upon thehousing or tubular casing: 15, as

seen in.Fig...1. It will be noted that, from the foregoing arrangement, a pinlessm ratchet and non-pressing plunger is the rei practically noiseless.

sultant, or obtainable thereby,` a suitable leather or some vsuitable composition washer 23 being inserted in the bottom of the capnut 2O for suitably cushioning the plunger,

thus rendering the plunger and ratchet In the second embodiment of our inven tion, we employ, in connection with a like interiorly screw-threaded tubular or barrel- Inember 24 and a screw 25 within said barrel-member, a miter gear 26 for driving the barrel-member instead of by the pawl and ratchet, suitably housed in a flanged sleevelike member 27 having suitably screwed to its bottom-edge a flanged tubular member 27a, as at 27h slipped around or upon the barrel-member 24. The screw is secured to a base 28, the barrel-member 24 being applied to the screw, the screw being secured in position as shown ,in the above described embodiment of my invention, namelyrby a nutted lower end tenon 29 of the screw and a feather or key 29a inserted between the tenon and base, the nut applied to the tenon, being designated as 29b and received within a recess 29c in the bottom of the base, with the lower end of the tenon lremoved within the base Ifrom contact with the surface upon which the base may rest for the purpose disclosed in said above `described embodiment of the invention.

The mitre-gear housing 27 is formed with an upwardly projecting tubular extension 30 within which is enclosed the barrel 24, said tubular extension having arranged upon its upper end a seat 3l for the swiveled jack-head 32, which jack-head has an upper bifurcated approximately ovoid` surface,

preferably .to provide for readily seating the automobile or motor aXle, or other object therein and preventing the inadvertent slipping of the thus supported object or weight. The jack-head seating member 31 rests upon a preferably polished steel washer 33 supported upon a thrust bearing member 34, the upper end of the tubular eXtension 30 encompassing the latter.- :A screw 35, with its head positioned in a counterbore or depression 36 in the jack-head 32 is threaded or screwed into an interiorly threaded tubular extension 37 of the jackhead, thus providing for the effective retention of the latter in position. The depression 36 is of a greater depth than to just receive the head of the screw, but is 'adapted to provide for the clearance of the screw head as indicated at 38, in allowing for the vertical adjustment of the j ack-head according to the angularity of positioning the same, as may be required for applying the jack to the axle or shaft of an automobile or other motored vehicle in passing the means or wrench for actuating the jack laterally of or between the spokes of the wheel, as later indicated. An oil-duct 39 is provided at the upper end of the outer tubular extension 30 for passing oil or lubricant therethrough for lubricating purposes; also at 40 is a duct through the tubular extension for a like purpose and at a point intermediate said member and the barrel-member 24 is a groove 4l for the same purpose.

The screw 25 is also provided at its eX- treme upper end with a flange 42 and the barrel member 24 is provided in like manner as the corresponding element l of the aforesaid embodiment of the invention, with a spiral thread 43, said fiange and said spiral thread being co-operative for the same purpose as indicated in said embodiment.

A worm 44 meshes with the miter gear 26, its journal 44a being supported within sectional or halved-together bearing 45, sup ported from the casting of the miter gear and suitably held together preferably by headed screw-threaded bolts 46. The journal 44EL of the worm 45 is equipped at one end, as disclosed by Figs. 5 and 6, more particularly, with a spherically-shaped head 47, which is so contoured however, as to provide square or quadrangular formations thereon for the application thereto of the correspondingly shaped socket of a wrench, as is obvious and which will be apparent from the subsequent description. Extendlongitudinally through the worm-journal and the nut-shaped formation, is a passage 43, as indicated in dotted lines in said figures, adapted to receive a sliding or retractile viseflike operating lever or instrumentality 49, as indicated partially in dotted lines and partially in fullelines. Said instrumentality or lever, it will be seen, is adapted to be slid or retracted within the passage 48 of the worm-journal 44, having suitable end retaining cap-members as seen, when not in effective use. Said lever or instrumentality has spherical terminals 49a, one of which is adapted to be housed and slid within the passage 48 and allow of the movement of the lever at right angles to the axis of the worm and be retained against inadvertent displacement as also indicated in dotted lines in Figs. 5 and 6, the other `spherical terminal of the lever is adapted to be seated as at 49b in the spherical terminal 47 of the worm-journal 44a `when thc lever is in its retracted position, as also seen in said figures. By means of this arrangement, it will be observed that, by suitably extending the lever 49, as indicated in dotted lines, and grasping and whirring .or imparting a rapid twirling movement thereto, the worm will be accordingly given an accelerated movement and provide for imparting a quick or speeding action to, and thus rapidly run up the barrel-member with the jack-head: any slight slackness can be readily remedied by suitably tapping the jack-head. In event of breaking the lever 49, a nail, as 50 or other instrumentality Vconvenient for the purpose, may be used or impressed into service. Y

As indicated in Fig. 8 a wrench-member or spindle 5l may be applied to the squared nut-like formation of the worin journal 44. and a suitable handle adjusted to the end thereof of angular-outline as at 51a for op erating the jack. In applying the jack for use laterally ofV the automobile or other wheeled motor or machine which would obviate operating the jack thereunder, a braceand-bit like instrumentality as at 52, as shown in Fig. 9, may be employed, the socket end 52a thereof being applied to the quadrangular formation of the wormjournal 44a, said instrumentality being previously passed between the wheel-spokes and the jack-head suitably adjusted to the aXle or shaft; the handle or brace of the instrumentality is now positioned at the chest and the crank or intermediate portion of the in-V strumentality grasped and suitably manipulated as in operating thisl type of wellknown device employed in actuating an auger, thus effecting the jacking-'up operation with convenience and facility and without the trouble, stress and unsanitary conditions heretofore attending the same.

In the modification as disclosed by Fig. 7, is shown a swiveled jack head 53, which has a plurality of equidistantly arranged teeth 54, around its base or bottom edge adapted to be received within a plurality of sockets 55 in the barrel-member, the teeth when withdrawn from these sockets, as is the case when the jack-head 53 is velevated out of its seat, allows the latter to be disposed at the desired angle and locked at such angle by again eecting engagement between these teeth and their sockets; this arrangement thus provides for disposing the j ack-head to the automobile-axle to cause Vit to aline or parallel said aXle, also to provide clearance for the jack-head in case of the presence of an otherwise obstructing brakeshaft drum.

In a counterbore 56 in the swiveled jackhead 53 is a headed screw -57 threaded into a depending` portion 58 of the barrel member 59 for the providing for the vertical adjustment of the j ack-head.

IVe claim:

1. A jack or device of the type described comprising an interiorly screw threaded barrel having an annular concaved bearing portion at its upper end, antifriction members in said conca-ved bearing portion, a

Vupon said housing.

jack head swiveledl on saidbearing portion and rotatably supported `on said antifriction members, a screw within said barrel, and

means for actuating said barrel with respectJ to said screw.

2. A jack of the type described, including a ratchet-member, a plunger engaging said ratchet, and a housing for said plunger and ratchet-member, said plunger member having a plurality of stepped transverseV sections, one having opposite plane surfaces or faces engaged by opposite corresponding surfaces ofthe plunger housing.k Y j 3. A jack of the type described, including an interiorly-threaded barrel-member, a screw engaging the threads of said barrellmember, al ratchet-member, Va plunger Aengagingsaid ratchet-member, a substantially common housing for Vsaid plunger [and ratchet-member having said barrel-member passingfreely therethrough, said housing having a cap-nut applied to one end there-V ofand threaded upon saidrlplunger, and means for the retention of said cap-nut 4. A jack of the type described, including an screwengaging lthe threads of said barrelmember, a ratchet-member, a plunger en gaging said ratchet-member, a substantially common housing for saidY plunger and .ratchet-member having said barrel member passing freely therethrough, said housing having a cap-nut applied to one end thereof and threaded upon said plunger, and means for the retention of said cap-nut upon said housing, and a resilient member arranged between said plungerV and its housing, clearance therefor being provided by a stepped enlargement of saidhousing. v

5. A jack of the type described including a threaded barrel-member provided with a jack-head, Yineans engaging the threads of said barrel-member, said jack-head provided with a vertically Vadjusting member received thereinto and threaded into said barrel-member, said jack-head and barrelmember being provided with interengaging teeth and sockets for the retention `of said jack-head in effective position against inadvertent turning. s

j In testimony whereof, we aiiiX our signatures. Y Y

` NORMAN E. HAR-RIS. WILL D. Y'SVVIGrGART.

interiorly-threaded barrel-member, a 

